Flora of North America species comparison

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Oligomeris linifolia

desert-spike, flaxleaf-whitepuff, leaf cambess, lineleaf whitepuff
Habit Plants usually annual, rarely perennial, 8–40 cm.
Leaves

blade linear to oblanceolate, 0.8–5 × 0.05–0.2 cm, sometimes with hyaline basal teeth 0.2–0.4 mm, apex obtuse or acute, surfaces glabrous or scabrid.
Inflorescences

2–12(–25) cm;

bracts persistent, linear to lanceolate, 1–1.5 mm.
Flowers

sepals lanceolate to deltate, 0.7–1.5(–2) mm;

petals whitish, ovate, slightly shorter than sepals, 0.7–1(–1.7) mm, usually distinct, sometimes barely connate basally;

filaments 1.5(–2) mm, barely connate basally;

anthers 0.3–0.5 mm.
Capsules

sessile or subsessile, compressed-subglobose, 1.7–3 × 2–3.4 mm, apically 4-toothed, teeth acute, 0.5–0.7 mm.
Seeds

black or brown, 0.5–0.7 mm.
2n

= 30.

Oligomeris linifolia
Phenology Flowering (Jan-)Feb–Jul(-Dec).
Habitat Pastures, desert washes, sand dunes, creosote scrub, mesquite thickets, volcanic soil, sometimes in brackish or alkaline soils
Elevation -60-1200(-1400) m (-200-3900(-4600) ft)
Distribution
from FNA
AZ; CA; NM; NV; TX; UT; n Mexico (Baja California, Baja California Sur, Chihuahua, Coahuila, Durango, Nuevo León, Sonora, Zacatecas); sw Asia; c Asia; n Africa; n Atlantic Islands
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Discussion

The native status of Oligomeris linifolia in North America has long been controversial; its presence represents the most remarkable disjunction in the family. Recent molecular research (S. Martín-Bravo et al. 2009) strongly suggests that it is native here.

Oligomeris linifolia has been reported to be toxic to cattle. Occurrence of this species in Utah is based on the following collection: “southern Utah,” 1877, E. Palmer 47 (US, WIS). “Cambess” has appeared in literature as a common name for O. linifolia, apparently resulting from confusion with an abbreviation of the author Cambessèdes. “Lineleaf whitepuff” has also appeared as a common name for this species; the epithet linifolia should be translated as “flax-leaved.”

SELECTED REFERENCE Martín-Bravo, S. et al. 2009. Is Oligomeris (Resedaceae) indigenous to Noth America: Molecular evidence for a natural colonization from the Old World. Amer. J. Bot. 96: 507–518.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 191.
Parent taxa Resedaceae > Oligomeris
Synonyms Reseda linifolia
Name authority (Vahl) J. F. Macbride: Contr. Gray Herb. 53: 13. (1918)
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Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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